data.legacy.frh retrieves and converts old f(RH) fits and converts it into CPD2 style data. It will only convert XHh records and the conversion is not completely accurate (since he CPD2 specification for f(RH) fits changed). For accurate conversion, use data.aggregate.humidograph.

The time specifiers for the data to be retrieved. Start is inclusive while end is exclusive, so all data contained within the half open interval [start,end) will be returned. Any convertible time format is accepted.

The cpd2 record type to be retrieved. For example: 'XHh'. Case sensitive. Multiple record types may be separated by ”,”, ”;” or ”:”. However data will only be generated for the record 'XHh' with all others being ignored.